高速铁路32 m简支梁墩顶纵向刚度限值研究

Research on longitudinal stiffness limit of 32 m simply supported beam pier of high speed railway

为得到高速铁路32 m简支梁墩顶纵向刚度限值,对32 m简支梁无缝线路轨道强度和稳定性进行计算分析,探讨了墩顶纵向刚度限值的影响因素。结果表明,有砟轨道桥梁墩顶的纵向刚度限值为210 k N/cm,有砟轨道桥墩顶纵向刚度限值受梁轨快速位移控制。

In order to obtain the longitudinal stiffness limit of the 32 m simple-supported beam pier of high-speed railway, the strength and stability of the 32 m simply supported beam seamless track are calculated and analyzed, and the influencing factors of the longitudinal stiffness limit of the pier are discussed. The results show that the longitudinal stiffness limit of the top of the truss pier is 210 kN/cm, and the longitudinal stiffness limit of the pier of the truss bridge is controlled by the rapid displacement of the beam.